Mode of constructing ptjslps



ITED 'STATES PATENT @FFl't-CF.

JOEL FARNAM, OF STILLW'ATER, NEV YORK.

MODE OF CONSTRUCTING PUMPS.

Specification of Letters Patent No. 2,370, dated November 16, 1841.

To all whom may concern Be it. known that I, JOEL FARNAM, of Stillwater,in the county of Saratoga and State of New York, have invented a new anduseful Improvement in Double-Acting Horizontal Pumps for Raising andForcing lVater, which is ldescribed as follows, reference being had tothe annexed drawings of the same, making part of this specification.

Figure 1 is a vertical longitudinal section. Fig. 2 is a verticaltransverse section. Fig. 3 view of the under-side of the pump turnedup-the cup being removed in order to show the apertures in the bottomplate. Fig. 4 horizontal section of ditto.

Similar letters refer to corresponding parts.

This improved pump consists of a horizontal cylinder A cast solid at oneend and closed at the other end by a circular head H screwed or boltedto the cylinder, through the center of which the piston rod I passesthepiston J working in said cylinder having two chambers K1 K2 formedaround its outer surface divided or separated from each other at thecenter above and below the cylinder by partitions Dl D2 into whichchambers the water is alternately7 raised by the alternate movement. ofthe piston said chambers K1 K2 having a communication with the cylinderby means of two tubes or trunks Y made in castings C1 C2 cast on thebottom of the cylinder-and two small openings O1 O2 made in the bottomof the cylinder, one of said opening O2 being near the solid end of saidcylinder, and the other O1 near the end of the cylinder closed by ascrew cap. The bottom plate Q. of said chambers having two rectangular'openings for two valves F1 F2 fastened to the lower cup E opening upwardinto the chambers one on each side of the lower partition D2 for theadmission of the water passing through the cup E bolted to the undersideof plate Q to the top plate of which cup the aforesaid valves F1 F2 areattached and to which the conducting tube is fastened; sald valvesshutting off the return of the water at the return stroke of the pistonby dropping down on said top plate of the cup. And

the upper plate R of said chambers having two valves G1 G2 openingupward into an upper or discharging cup P into which the water is forcedsaid valves shutting down upon top plate R and preventing the return ofthe water at the reverse movement of the piston; to which cup thedischarging tube is attixed. The aforesaid communicating tubes or trunksY leading from the outside chambers K1 Y2 to the interior of thecylinder A being formed in two proliections or castings C1 C2 as beforestated. cast. on the under side of the cylinder diagonally opposite eachother one on the right of the lower partition D2 next the solid end ofthe. cylinder and the other on the left of said partition Dl next theend of the cylinder closed by thev cap H.

As the piston moves toward the solid end of the cylinder the water isforced to follow it by the atmospheric pressure, passing through valveF1 Fig. 2 (not seen in Fig. 1 being in the chambers on the opposite sideof cylinder) and through the tube or trunk Y into the cylinder throughthe aperture O1 while the piston forces the water in the cylinder nextthe solid end through the opening 02 back into the chamber K1 and upthrough the valve G1 into the discharging cup P; at the same timeclosing the valve F2 over the receiving cup E on one side of the lowerpartition D2 and opening the valve Fl in chamber K2 and closing valve G2of the cup l), which, on the return of the piston is opened to allow thewater to escape from the end of the cylinder next the screw cap H whilethe corresponding valve F1 over the receiving cup is closed to preventthe ret-urn of the water through said cup and its escape at any otherplace except. through said valve C2 and in this manner a double actionis kept up as the piston moves back and forth-the aforesaid pump beingcast in one piece except the screw cap, piston, valves, and cups.

What I claim as my invention and which I desire to secure by LettersPatent. is-

Combining the receiving and discharging cups E and P with each other andwith the cylinder A by means of a double chamber connected by trunkswith the cylinder as set forth-that is to say, constructing the pumpwith a chamber K around the outside of the cylinder, divided bypartitions D said chamber communicating with the cup E and P and alsowith the cylinder A at either end by two tubes or trunks Y formed inarms or projections C cast on the under j /f/ g 2,370

side of the cylinder, one next the solid end Kl K2 at the alternatebackward and forof the cylinder on the right of the lower ward stroke ofthe piston J as described.

Jzutton and the other next the end of the Vlinder closed by the screwcap, on the left JOEL FARNAM' 5 of the said partition-both being for theVitnesseS: purpose of conducting the water to and WVM. P. ELLIOT,

from the cylinder through the chambers EDW. MAHER.

